package first;

public class UserManagerImpl implements UserManager {
  
    @Override  
    public void addUser(String userId, String userName) {  
        System.out.println("UserManagerImpl.addUser");  
    }  
  
    @Override  
    public void delUser(String userId) {  
        System.out.println("UserManagerImpl.delUser");  
    }  
  
    @Override  
    public String findUser(String userId) {  
        System.out.println("UserManagerImpl.findUser");  
        return "张三";  
    }  
  
    @Override  
    public void modifyUser(String userId, String userName) {  
        System.out.println("UserManagerImpl.modifyUser");  
    }  
  
}  